If you have the opportunity or possibility to combine floorball and hockey practices as a player, I think you should do it, that’s my recommendation based on earlier posts. You as a player will benefit from it in both in hockey and floorball, since the two sports are very similar, requiring similar skills in stickhandling, game understanding, body contact, strength etc.
Make the choice between the sports later, both floorball and hockey are fantastic games and can be combined and will strengthen your skills as a player in both sports.
Make the choice between the sports later, when you are older, depending on what you like or sometimes what you have the best skills for.